People tend to think of "harm" as limited to the individual human body or psyche. However, nuclear harms violate not only the human body, but also the biosphere on which all life depends. Despite this, ethical thinking on the nuclear age remains human-centred. To render these human-biosphere connections visible in nuclear discourse, this project problematizes Andrew Linklater's efforts to globalise the liberal harm principle by (re)constructing the Antipodean nuclear philosophy of the late environmental philosopher, Richard Routley/Sylvan, through archival research.︎